I have a dumb question, but no one seems to know the answer.What is the
radius (out-side rail to out-side rail) of the Atlas 027 track?I want to
replace my Lionel 027 track with something a little morerealistic.
Atlas-O specifies their 3-rail curve sizes the same way 2-railers
do, center-rail to center-rail. This is different than most
tin-plate track where the diameter is specified from outside tie
edge to opposite outside tie edge.
A quick rule-of-thumb is add 1-1/4" to the Atlas-O size to get
the "tinplate" measurement. So Atlas-O O27 curves would actually
be O28-1/4 using the tinplace specification method.
Head Rust Scraper
KL&B Eastern Lines RR Museum